Of Robert Deuerux Earle of Essex and George Villers Duke of Buckingham : Some observacons [sic] by way of paralell in the tyme of their estates of favoure./Henry Wotton, Sir; Pre-1650 Manuscript Collection (University of Illinois at Urbana-Champaign Library); University of Illinois at Urbana-Champaign. Rare Book & Manuscript Library.; [England, approximately 1641]